History
SAM's were originally developed at the “Cambridge Growth Project” in Cambridge, UK, which developed the first SAM in 1962 (Stone and Brown 1962). They were built as a matrix representation of the National Account, and came to the World Bank with Graham Pyatt in the 1960s (Pyatt had worked for Richard Stone at the Cambridge Growth Project). Pyatt left Cambridge and “developed SAMs, mainly at the World Bank”, becoming together with Erik Thorbecke, the leading proponents and developers of SAMs.
"By the early 1980s, CGE models were heavily ensconced as the approach of the World Bank for development analysis. Social Accounting Matrices (SAMs) were similarly a mainstay of Bank analysis, which had been adopted as a presentational device by the CGE modelers" (Mitra-Kahn 2008: 23)
Read more about this topic: Social Accounting Matrix
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